内蒙古狼山西段色尔腾山岩群地球化学特征及构造环境判别  

GEOCHEMICAL FEATURES AND TECTONIC SETTING OF SEERTENG ROCK GROUP, WESTERN LANGSHAN IN INNER MONGOLIA

作　　者：王云凤 陈世强 戴霜[2] WANG Yun-feng CHEN Shi-qiang DAI Shuang(No.4 Geology and Mineral Exploration Team, Gansu Provicial Bureau of Geology and Mineral Exploration and Development, Jiuquan 735000, China College of Earth Environmental Sciences, Lanzhou University, Lanzhou 730000, China)

机构地区：[1]甘肃省地矿局第四地勘院,甘肃酒泉735000 [2]兰州大学资源环境学院,甘肃兰州730000

出　　处：《甘肃地质》2016年第2期15-19,43,共6页Gansu Geology

摘　　要：狼山地区色尔腾山岩群的研究对探讨华北板块北缘西段晚太古代的构造演化及指导该区铁、铜等矿产勘查具有重要意义。通过对尚德—明路一带色尔腾山岩群的地球化学特征及构造环境研究发现,研究区色尔腾山岩群岩石中富钠贫钾,轻稀土富集,Eu略微亏损;总体富集微量元素;原岩建造为泥质碎屑岩—中基性火山岩和碳酸盐岩建造特点,形成环境为滨海相—浅海相,伴随有小规模的岛弧型火山喷发,晚太古代古蒙古洋开始闭合;同时较厚的碳酸盐岩的沉积说明尚德—明路一带海水较深,不利于含铁、铜的物质沉积。Seerteng rock group, located the Western Langshan in Inner Mongolia, and has important poor, LREE enrichment, Eu slight loss, and overall enrichment of trace elements. Its protolithic was the argillaceous clastic rocks-mafic volcanics and carbonates built, the environment for the formation of littoralneritic, and accompanied by a small island arc volcanic eruption, and the ancient Mongol late Archean ocean starts to close. Simultaneous deposition of a thick carbonate rocks show the Shangde-Minglu in the vicinity of the sea is deep, and is not conducive to iron, copper deposition material.

关 键 词：色尔腾山岩群 地球化学特征 构造环境 内蒙古 

分 类 号：P618.41[天文地球—矿床学] P618.31[天文地球—地质学] P587